In the song, Assange declares, "We live in the world that your propaganda made. Where you think you are strong you are weak...Your secrecy shows us where we will strike. Your weapons reveal your fears for all to see."

Pérez visited Assange in the Ecuadorian Embassy in London last June. The two sent questions on a variety of themes of social justice out into the Twitter-sphere using hashtag #JulianAssangeCalle13 and received thousands of responses, which they used to write the song.

"Multi_Viral," is featured on Calle 13's upcoming album due out in March, which will be released on an independent label following the band's departure from Sony Music Latin.

Check out Assange interviewing Pérez on the WikiLeaks YouTube channel about the album (note that the interview switches from Spanish to English). Let us know what you think in the comments section below!